Spring中数据绑定的两种方式（BeanWrapperImpl或者DataBinder）

import org.apache.shiro.authc.AuthenticationToken;
import org.springframework.beans.*;
import org.springframework.validation.DataBinder;

import java.util.HashMap;
import java.util.Map;

/**

 * <p>Version: 1.0
 */
public class StatelessToken implements AuthenticationToken {

    private String username;
    private Map<String, ?> params;
    private String clientDigest;

    public StatelessToken(String username,  Map<String, ?> params, String clientDigest) {
        this.username = username;
        this.params = params;
        this.clientDigest = clientDigest;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public  Map<String, ?> getParams() {
        return params;
    }

    public void setParams( Map<String, ?> params) {
        this.params = params;
    }

    public String getClientDigest() {
        return clientDigest;
    }

    public void setClientDigest(String clientDigest) {
        this.clientDigest = clientDigest;
    }

    @Override
    public Object getPrincipal() {
       return username;
    }

    @Override
    public Object getCredentials() {
        return clientDigest;
    }

    public static void main(String[] args) {

    }
    public static void test1() {
        StatelessToken token = new StatelessToken(null, null, null);
        BeanWrapperImpl beanWrapper = new BeanWrapperImpl(token);
        beanWrapper.setPropertyValue(new PropertyValue("username", "hjzgg"));
        System.out.println(token.getUsername());
    }

    public static void test2() {
        StatelessToken token = new StatelessToken(null, null, null);
        DataBinder dataBinder = new DataBinder(token);
        Map<String, Object> params = new HashMap<>();
        params.put("username", "hjzgg");
        PropertyValues propertyValues = new MutablePropertyValues(params);
        dataBinder.bind(propertyValues);
        System.out.println(token.getUsername());
    }
}